Stock BOV is now fluttering!

[beatshack]

My stock BOV had a huge boost leak at the gasket, so I took the gasket off, razorbladed the surfaces until they were smooth again, and used gasket maker as my new gasket. Now when I blow off, its always a flutter.. compressor surge The only 2 things I can think of that may have changed are:

a) the gasket maker may have squished over the small hole beside the intake hole on the bov. What is that hole for anyway?

b) the vacuum line going to the bov may be kinked or pinched off..



Any clues? Thanks in advance.

 

[beatshack]

UPDATE: I took the bov and realized that the tiny hole beside the BOV intake hole had sucked up tons of gasket maker while it was still semi-wet.

I think this BOV might be toast now unless I can somehow get the hardened rubber out of there.

 

[steve]

a) the gasket maker may have squished over the small hole beside the intake hole on the bov. What is that hole for anyway?

That hole is the port for the fast release chamber.
The BOV has a upper and lower chamber with the diaphram between them. Normally under boost both fill with air at the same presure (boost). Once you close the throttle the upper chanber that is connected to the intake manifold drops to a vacuum while the lower chamber is still at boost pressure like the UICP. This forces the diaphram to move quickly overcoming the spring and opening the vent.

This is why we tell people not to use RTV on the BOV flange, It's also why I'm not a big supporter ot the Dodge Garage BOV mod from the VFAQ http://www.thedodgegarage.com/turbo_bov_mod.html

Steve

 

[beatshack]

Thanks, I did manage to get all of the gasket maker out of that hole and the bypass is re-circing normally again.

 

[95-talontsi]

Is it bad when it flutters? Mine started after I used some rtv...I thought it was from the metal intake pipe I made. If your not suppose to use rtv then what? I tried a brand new gasket on mine but it still leaked. 2 gaskets perhaps then?

 

[Turbo Talon 111]

ive always used a coat of red rtv on both sides of the gasket and never had a problem with it.

 

[95TalonOwner]

If you insist on using the RTV, then just wait 24 hours until it is fully cured before running your car and you shouldn't have any problems.

 

[beatshack]

^^ That's basically it. Don't use gobs of it and wait the proper time for curing and it should be fine. I drove mine after 4 hours, and 20 in/hg of vacuum was enough to suck up the still-wet rtv into the BPV. You should be using some type of gasket dressing (like he said, a thin layer of RTV on both sides of the gasket should work great IF you wait for curing time).

 

[Highbooost]

The flutter is not the BOV, it is compressor surge on the turbo becuase the BOV is not working properly.